How long is the robot vacuum cleaner Xiaomi Vacuum Cleaner 1S charged: full analysis + 5 ways to speed up the process

Xiaomi Mi Robot Vacuum Cleaner 1S (aka 1C in some regions) has become one of the most popular home assistants due to the balance of price and functionality. But even such a proven device has questions about operation — especially when it comes to charging times. You bought a device, put it on the dock, and after an hour or two it still flashes red? Or vice versa — charged in 30 minutes, but after 10 minutes of cleaning the villages? In this article, we will discuss the exact charging time for different scenarios, why it can differ from the manufacturer’s stated, and what to do if the process is too long or too fast.

Note that official Xiaomi data often differs from the actual experience of users. The specifications indicate that it takes “about 3-4 hours” to fully charge, but in practice this time can vary from 2 to 6 hours — depending on the state of the battery, indoor temperature and even the firmware version. We tested the device in different conditions and collected data in convenient tables, and also prepared a checklist for diagnosing problems.

Official data vs reality: how much should be charged Xiaomi 1S

The manual for Xiaomi Mi Robot Vacuum Cleaner 1S states that the full charge time is 3-4 hours, but this value is only true for a new device with a battery charged to 0% at room temperature (20-25 ° C).

• 🔋 New vacuum cleaner (first 3 charging cycles): 3.5-4.5 hours. The battery "swings" so time can be longer.
• ⚡ After a deep discharge (0-5%): 4–5 The charge controller limits current for safety.
• ❄️ At low temperatures (<15°C): before 6 Chemicals in the Li-ion battery are slowing down.
• 🔥 High-temperature (>30°C: 2.5-3 hours, but this damages the battery!
• 🔄 After partial discharge (e.g. 50%): 1.5–2 hours.

It is important to understand that the Xiaomi 1S uses a lithium-ion battery with a capacity of 2600 mAh (nominal voltage 14.4V). The manufacturer claims 150 minutes of battery life, but this value is achieved only in the mode of “Quiet Mode” (Quiet Mode) on flat surfaces. In real conditions (carpets, maximum suction power), the operating time is reduced to 60-90 minutes, which means that charging cycles become more frequent.

Table: Charging time Xiaomi 1S in different conditions

If your vacuum cleaner charges significantly longer than the above values (for example, more than 6 hours at room temperature), this may indicate:

• 🔌 Docking station malfunction (check contacts and power cable).
• 🔋 Battery degradation (if the device is larger) 2-3 years).
• 📱 Firmware problems (update the software through the Mi Home app).

5 Reasons Why Xiaomi 1S Is Charging Too Long

If your Xiaomi 1S robot vacuum cleaner spends more than 5 hours at the dock, don’t be quick to blame the battery.

1. Bad contact with the docking station: Dust, debris or wear of metal contacts on a vacuum cleaner or base can interrupt charging. Solution: wipe the contacts with alcohol and check the density of the fit.
2. Non-original power supply: If you are not using a native adapter (for example, from another Xiaomi device), the voltage or current strength may not meet the requirements. Solution: check the marking on the unit - it should be 19.5V 0.6A.
3. If the dock is connected via an extension cord with other powerful appliances (such as a refrigerator or microwave), the voltage can subside. Solution: connect the base directly to the socket.
4. Outdated firmware. Early versions of software had charging control bugs. Solution: Update firmware through Mi Home → Device → Settings → Software Update.
5. Battery degradation: After 300-500 charging cycles, battery capacity decreases by 20-30% and charging time increases. Solution: Check the status of the battery in the application (Battery status section).

Check the contacts on the vacuum cleaner and docking station|Use the original power supply unit|Connect the base directly to the outlet (without extension cords)|Update the firmware through Mi Home|Check the temperature in the room (optimally) 20-25°C)-->

⚠️ Note: If the vacuum cleaner Xiaomi 1S charge for more than 8 hours and does not heat up, this may indicate a faulty charge controller, in which case repair is required in the service center - self-replacement of the board is fraught with short circuit!

How to speed up charging Xiaomi Vacuum Cleaner 1S: 5 working ways

If you need to get the vacuum cleaner ready for cleaning quickly, you can reduce the charging time a little, but remember, using these methods regularly reduces battery life. Use them only in exceptional cases!

• 🔌 Use the original power supply. Non-original adapters often give out less current, which increases the charging time for the battery. 20-30%.
• ❄️ Cool the battery before charging. If the vacuum cleaner has just finished cleaning, let it cool down. 10-15 The overheated battery charges more slowly.
• 📵 Turn off Wi-Fi and notifications. As you charge, the robot uses energy to communicate with the app. Disconnect it from the network in Mi Home. → The device → Settings → Network.
• 🔋 Charge to 80%. The last 20% of the capacity charges the slowest. If you need a quick cleaning, interrupt charging by 80% (but don't do it regularly!).
• 🧹 Clean the contacts. Oxidation or dust on the metal plates increases resistance. Rub them with a stripe or alcohol.

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If the vacuum cleaner is charging too fast (less than 2 hours), this may indicate a faulty battery or controller.In this case, the battery is not gaining full capacity and battery life is drastically reduced.

One of the most effective ways to extend the life of a battery and reduce charging time is to calibrate the battery.

1. Discharge the vacuum cleaner to 0% (until it shuts down on its own).
2. Put on the charge and wait 100% without interruptions.
3. Repeat the cycle 2-3 times.

This procedure helps to reset controller errors and restore accurate readings of the charge level.

What to do if Xiaomi 1S does not charge at all

When the Xiaomi 1S vacuum cleaner does not respond to the docking station, it is less common, but it is more critical.

If after all the manipulations the charging did not go, the reasons may be as follows:

⚠️ Note: If the vacuum cleaner Xiaomi 1S After resetting, it still does not charge, do not disassemble it yourself - there are high-voltage capacitors inside that can retain charge even after the power is turned off.

How to check the battery status of Xiaomi 1S

Over time, the battery capacity in Xiaomi Mi Robot Vacuum Cleaner 1S decreases, and this directly affects charging time and autonomy.

Method 1: Through the Mi Home app

1. Open the Mi Home app and select your vacuum cleaner.
2. Go to Settings. → Battery status.
3. Please note the Battery Health option.

The values are deciphered as follows:

• 🟢 90-100% — battery in excellent condition.
• 🟡 70-89% — marked decrease in capacity, charging time increases.
• 🔴 Less than 70% – Replacement of the battery.

Method 2: Manual test of autonomy

If you do not have access to the application or the data seems unreliable, do a test:

1. Fully charge the vacuum cleaner to 100%.
2. Start cleaning in Standard Mode (average power) on a flat surface (for example, laminate).
3. Set the time to full discharge.

Compare the result with the table:

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If the battery in the app is less than 70% healthy and the vacuum cleaner lasts less than 40 minutes, that's a direct signal to replace the battery. Using a worn-out battery not only reduces cleaning time, but can cause the device to suddenly shut down in the middle of the cycle.

Frequent questions about charging Xiaomi Vacuum Cleaner 1S